Is surveillance imaging in pediatric patients treated for localized rhabdomyosarcoma useful? The European experience.

Bas Vaarwerk, Coralie Mallebranche, Maria C. Affinita, Johanna H. van der Lee, Andrea Ferrari, Julia C. Chisholm, Anne-Sophie Defachelles, Gian Luca De Salvo, Nadège Corradini, Veronique Minard-Colin, Carlo Morosi, Hervé J. Brisse, Kieran McHugh, Gianni Bisogno, Rick R. van Rijn, Daniel Orbach, Johannes H. M. Merks

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND: After the completion of therapy, patients with localized rhabdomyosarcoma (RMS) are subjected to intensive radiological tumor surveillance. However, the clinical benefit of this surveillance is unclear. This study retrospectively analyzed the value of off-therapy surveillance by comparing the survival of patients in whom relapse was detected by routine imaging (the imaging group) and patients in whom relapse was first suspected by symptoms (the symptom group). METHODS: This study included patients with relapsed RMS after the completion of therapy for localized RMS who were treated in large pediatric oncology hospitals in France, the United Kingdom, Italy, and the Netherlands and who were enrolled in the International Society of Paediatric Oncology Malignant Mesenchymal Tumor 95 (1995-2004) study, the Italian Paediatric Soft Tissue Sarcoma Committee Rhabdomyosarcoma 96 (1996-2004) study, or the European Paediatric Soft Tissue Sarcoma Study Group Rhabdomyosarcoma 2005 (2005-2013) study. The survival times after relapse were compared with a log-rank test between patients in the imaging group and patients in the symptom group. RESULTS: In total, 199 patients with relapsed RMS were included: 78 patients (39.2%) in the imaging group and 121 patients (60.8%) in the symptom group. The median follow-up time after relapse was 7.4 years (interquartile range, 3.9-11.5 years) for survivors (n = 86); the 3-year postrelapse survival rate was 50% (95% confidence interval [CI], 38%-61%) for the imaging group and 46% (95% CI, 37%-55%) for the symptom group (P = .7). CONCLUSIONS: Although systematic routine imaging is the standard of care after RMS therapy, the majority of relapses were detected as a result of clinical symptoms. This study found no survival advantage for patients whose relapse was detected before the emergence of clinical symptoms. These results show that the value of off-therapy surveillance is controversial, particularly because repeated imaging may also entail potential harm.
Original languageEnglish
Pages (from-to)823-831
Number of pages9
JournalCancer
Volume126
Issue number4
DOIs
Publication statusPublished - 2020

Keywords

  • Female
  • Humans
  • Male
  • Italy
  • Child
  • Child, Preschool
  • Follow-Up Studies
  • Disease-Free Survival
  • Retrospective Studies
  • Netherlands
  • United Kingdom
  • France
  • *rhabdomyosarcoma
  • Neoplasm Recurrence, Local
  • *radiology
  • *surveillance imaging
  • *survival
  • Diagnostic Imaging/*methods/statistics & numerical data
  • Magnetic Resonance Imaging/methods/statistics & numerical data
  • Monitoring, Physiologic/*methods/statistics & numerical data
  • Rhabdomyosarcoma/*diagnostic imaging/pathology/*therapy
  • Tomography, X-Ray Computed/methods/statistics & numerical data

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